A5025930341- Animal Behavior and Welfare Studies
- Effects of Environmental Stressors on Livestock
- Animal health and immunology
- Microbial infections and disease research
- Animal Disease Management and Epidemiology
- Milk Quality and Mastitis in Dairy Cows
- Veterinary Equine Medical Research
- Ruminant Nutrition and Digestive Physiology
- Agriculture and Farm Safety
- Insect and Pesticide Research
- Nail Diseases and Treatments
- Genetic and phenotypic traits in livestock
- Fungal and yeast genetics research
- Veterinary medicine and infectious diseases
- Reproductive Physiology in Livestock
- Plant and fungal interactions
- Mast cells and histamine
- Dermatology and Skin Diseases
- Allergic Rhinitis and Sensitization
- Urticaria and Related Conditions
- Clostridium difficile and Clostridium perfringens research
- Quality and Safety in Healthcare
- Antimicrobial agents and applications
- Viral Infectious Diseases and Gene Expression in Insects
- Animal Virus Infections Studies
University of Copenhagen
2012-2025
ABSTRACT The etiopathogenesis of the skin disease digital dermatitis (DD), an important cause lameness in cattle, remains uncertain. Microscopically, appears to be polymicrobial, with spirochetes as predominant bacteria. objective this study was identify main part bacteria involved DD lesions cattle by using culture-independent molecular methods. Ten different phylotypes Treponema were identified either 16S rRNA gene sequencing from or fluorescence situ hybridization (FISH) analysis...
Calves are born agammaglobulinemic and depend on transfer of passive immunity from colostrum. Failure (FTPI) adequate (ATPI) defined as serum immunoglobulin G (IgG) levels < 10 ≥ mg/mL, respectively. The objective this study was to evaluate the level passively transferred in Danish dairy calves measured with Enzyme-linked immunosorbent assay (ELISA) Brix refractometer. Blood samples 834 (430 bull 404 heifer calves) aged two nine days were included study. Serum IgG concentration determined by...
In a cross-sectional study of 6240 Danish Holstein cows in 55 herds using loose-housing systems, sole haemorrhages and heel horn erosions occurred frequently almost all the herds. Digital dermatitis 47 (85 per cent). Spearman correlation coefficients revealed relationships between lameness ulcer (0.36), erosion haemorrhage (0.39), interdigital (0.29) double (0.26). The prevalence erosion, haemorrhage, digital appeared to be most affected by herd-level factors. associations individual foot...
Digital dermatitis (DD) refers to painful lesions primarily affecting the skin in interdigital region of dairy cattle. The purpose this study was evaluate dynamics DD 39 cows, observed at approximately 3-d intervals, for first 6 mo lactation. Specifically, aimed evaluating different levels susceptibility identifying bacterial colonization skin, and exploring relationship between clinical diagnosis laboratory findings. Three categories were identified DD: 1 = consistently healthy cow; 2...
This study aimed to enhance our understanding of the agreement between two sampling methods for detection bovine respiratory disease (BRD) pathogens in calves using high-throughput real-time qPCR (ht-RT-qPCR). In total, 233 paired nasal swab (NS) and non-endoscopic bronchoalveolar lavage (nBAL) samples were collected from 152 12 Danish cattle herds. 202 observations, examined a standardized clinical protocol. Samples tested three viruses (bovine syncytial virus, corona influenza D virus) six...
Corkscrew claw (CC) in dairy cattle is increasingly reported herds. CC a progressive deformity of the capsule with uncertain aetiology and pathogenesis. Genetics specific environmental factors are suspected contributing to development this irreversible condition. has been found lame cows; however, cause effect not established. To perform analysis risk factors, treatment pathogenesis, definition severity scores called for. The aim study was measure analyse characteristics from photos cows'...
Since 2009, Danish claw trimmers have been able to record health digitally during trimming. The records are owned by the farmer and can be used locally in herd on a large scale breeding organisations improve health. objective of this study was describe data recording routines prevalence digital dermatitis (DD), interdigital hyperplasia (IH), sole ulcer (SU) white line abscess (WLA) recorded (TrimmerID) at More than 5.18 million cows with recordings 2.75 trimming 2.4 concurrent diseases from...
Non-perforating abomasal lesions occur with a high prevalence in slaughtered dairy cattle. Ante mortem diagnosis is challenge, but the presence of occult blood feces suggested as diagnostic criterion. The lower detection limit Hemo-Fec® (Med-Kjemi, Asker, Norway) and Hemoccult II® SENSA® (Beckman Coulter, Brea, California, USA) for fecal were estimated. could detect 1–2 mL 2–4.5 1000 g feces, respectively. Therefore, test was selected to access hemoglobin degradation rumen establish if from...
Digital dermatitis is a highly prevalent painful lesion affecting the feet in dairy cattle. Even though pathogenesis has been subject of investigation since 1974, there still lack knowledge about spread disease among cows within herd as well between herds. The purpose this study was to monitor transmission digital under experimental conditions naive heifers and affected animals, changes clinical appearance, microbial colonisation skin lesions progressed apply q-PCR for detection Treponema...
Respiratory disease is an ongoing challenge for calves in the dairy sector with a relatively high prevalence and impact on welfare economics. Applying scoring protocols detecting respiratory requires that they are easily implemented, consistent between observers fast to use daily management. This study was conducted one Danish farm from September 2020 through January 2021. The included 126 heifer enrolled age of 17 24 d. All were observed every second day period 46 At each visit all scored...
Claw disorders are a major problem for health, welfare, and economy in dairy production. This retrospective observational study investigated the association between cow-level prevalence of claw horn disruptive lesions two different trimming methods - traditional Danish Method (DAM) White Line Atlas (WLAM). Trimming records from four herds Denmark over 4-year period were analysed. Within each herd, was performed with DAM first 2 years, WLAM next years. The data comprised 3316 trimmings 1027...